Ziousebio

Friends no more Complete a race in Split Screen mode.

Masked Acquire all Mask Shards

Talion A.D. Descend into the bowels of an urban jungle and confront a warrior-priest.

Walking With Spirits Completed "Walking With Spirits"

Wall of Duty Kill three Enemies with the Riot Shield in the Campaign or in Co-op.

Completed Act 2 - Assassin Complete Act 2 - Assassin Difficulty

Tacticool Fully upgrade a weapon brand.

Campaign Gold Obtain all 108 medals on the original Arkham City campaigns (as Batman)

Searcher Collect all Ansem Reports in Jiminy's Journal.

Going Strong Reach Rank 50

Hunting Season Vanquish 100 Soldiers, 100 Scientists, 100 Engineers and 100 All-Stars

Completed Act 7 - Easy Complete Act 7 - Easiest Difficulty

Shrapnel Storm Trainee Kill 10 enemies using Bullet Explosions

Repo Man You recovered the Aurora.

A Meeting of the Minds Completed "A Meeting of the Minds"

Tunnel of Funnel Master the Excursion Funnel

Collector Nerd Find 10 reward items

A Crappy Way to Die Kill the enemy in the porta-potty.

Daredevil While affected by one Flashbang, kill two enemies in the Campaign or in Co-op.

Gem Collector Collected 60,000 precious gems.

Cooking up a storm Manufacture a GTK item.

Fruit Fighter Shoot a background UFO in Future Tense.

The Part Where He Kills You This is that part

Perfect Knight - Day 2 Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddler's Revenge (as Batman)

Completed Act 8 - Easy Complete Act 8 - Easiest Difficulty

Weed Whacker Vanquish 100 Peashooters, 100 Sunflowers, 100 Chompers and 100 Cacti

Lunacy That just happened

All 4 Me!? Collect 400,000 Bolts

Sayonara Board the Ark of Yamato.

An Army Without Borders Cleared Prologue: An Army Without Borders.

Completed Act 3 - Assassin Complete Act 3 - Assassin Difficulty

Skullpture Vulture Find and destroy the 5 hidden Rex Graffiti Skullptures

Going Nowhere Fast Earn 50,000 Dread Points

Liquid Sun Cleared Act 1 (Middle East).

True Tourist Visit all 10 giant LEGO City stone statues

Ascension Collect 2400 Essence and hear the Seer’s final words

Make a Point Achieve the highest score in the Shooting Range

Completed Act 4 - Assassin Complete Act 4 - Assassin Difficulty

The Dark Lord Defeat Yami.

Fair's Fair Ride each of the 4 Super Build fairground rides

Gold Standard Get five gold medals in Challenge Mode

Original Gamer Win a game of Fanorona, Morris and Bowls on the Homestead.

Returning to the Roots Return to Odin's Camp for the first time (The Forgotten Saga)

Power Kat Raised all of Kat's powers to the maximum.

Unavoidable Fate Fulfilled all pacts for The Sorcerer's Ordeal.

Rescue You rescued Veronique.

Pole Position You beat Dierker in the Parisian race.

Unsafe Working Conditions Completed "Unsafe Working Conditions"

Blessed Acquire all Charms and receive Salubra’s blessing

Completed Act 5 - Assassin Complete Act 5 - Assassin Difficulty